Microscope lens barrel



FIG. 1 is a top, front and right side perspective view of a microscope lens barrel, applied to a microscope, showing my new design.

FIG. 2 is top, front and left side perspective view thereof;

FIG. 3 is a top, front and right side perspective view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a front view thereof;

FIG. 7 is a rear view thereof;

FIG. 8 is a top plan view thereof; and,

FIG. 9 is a bottom plan view thereof.

The portions of the drawings shown in broken lines are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a microscope lens barrel, as shown and described. 